The Fourth Amendment protects digital data the moment it is copied and seized by law enforcement, not just when it is searched, the Brennan Center argued in an amicus brief filed in the "Microsoft Ireland" case this week.

The Justice Department's revised guidelines on profiling by federal law enforcement include modest improvements, such as prohibiting the use of religion and national origin, but ultimately fall short of their purpose.

A revised version of the USA FREEDOM Act, introduced today by Sen. Patrick Leahy, would prohibit bulk collection of Americans' business records and increase transparency and accountability in surveillance.

The NSA and FBI monitored the e-mails of prominent Muslim American leaders and attorneys, according to documents revealed by Edward Snowden, including the head of the largest American Muslim civil rights group.

In a report on the collection of electronic communications under Section 702 of FISA Amendments Act, the Privacy and Civil Liberties Oversight Board gave short shrift to concerns about the potential for abuse of this massive collection program.

In a victory for Americans' digital privacy, the U.S. Supreme Court ruled today that police may not search the digital contents of cell phones seized from individuals who have been arrested unless they obtain a warrant.